Quote Originally Posted by everydaylight View Post
Is the "port" size the smallest opening at the back of these? It would be easiest to fill in to make the port smaller, but as a flared horn shape, I don't know how that affects the port's calculated size /area and length.
No and don't; truly flared has to be calculated based on its flare frequency and factor whereas a parabolic flare's [one side pair parallel] mean can be calculated using the end areas: mean area = [A1*A2]^0.5 for simming purposes. That said, Hornresp can do accurate enough sims just inputting the two areas and length as well as the horn flare.